Setup users host env for local instance support

- Setup flow controller in setup.py
- Define common method in base_task_runner.py
- Required package installer in host_setup_runner.py
- Host env configuration in host_setup_runner.py

Bug: 110388133
Test: ./run_tests.sh, m acloud && acloud setup.
Change-Id: Id8b988149d606553d31dfb466e0ae14883513553
diff --git a/public/acloud_main.py b/public/acloud_main.py
index b915894..88727e3 100644
--- a/public/acloud_main.py
+++ b/public/acloud_main.py
@@ -423,7 +423,7 @@
     elif args.which == CMD_SSHKEY:
         report = device_driver.AddSshRsa(cfg, args.user, args.ssh_rsa_path)
     elif args.which == setup_args.CMD_SETUP:
-        setup.Run(args)
+        setup.Run()
     else:
         sys.stderr.write("Invalid command %s" % args.which)
         return 2